Pier protection structure for transforming original cofferdam during pier maintenance

Abstract

The utility model provides a pier protection structure which is used for transforming an original cofferdam during pier maintenance, the pier protection structure comprises a bottom plate, the cofferdam, a support frame, a sleeve and a pier, the cofferdam and the pier are respectively fixed on the upper side surface of the bottom plate, and the sleeve is wrapped on the outer side surface of the pier; a plurality of supporting frames are rotationally mounted on the outer side surface of the sleeve; the other end of the supporting frame is attached to the inner wall of the cofferdam. According to the utility model, the sufficiency of the construction space is ensured by transforming the original cofferdam under the condition that the original cofferdam is not dismantled, so that the maintenance construction can be completed under safe and efficient conditions.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge reinforcement, and in particular relates to a bridge pier protection structure used for transforming an original cofferdam during bridge pier maintenance. Background Art

[0002] As an important part of transportation infrastructure, the safety and stability of bridges are of vital importance. In terms of underwater bridge structures, bridge piers, as the key part supporting bridges, have long been eroded by water flow, especially in rivers with large water flow, where bridge piers face serious safety risks. In order to deal with this problem, concrete cofferdams are usually set on the outer side of the piers to block the water flow through their structural characteristics, thereby protecting the piers from erosion.

[0003] However, the existing cofferdam has a limited distance between the cofferdam and the bridge pier. Therefore, when the bridge pier needs to be maintained, the existence of the cofferdam often limits the adequacy of the construction space, making it difficult to carry out the maintenance work efficiently. If the method of dismantling the original cofferdam and building a double-walled cylinder box cofferdam before construction is adopted to solve this problem, it is necessary to dismantle the double-walled cylinder box cofferdam after maintenance and restore the original cofferdam, which not only leads to a long construction time, but also a high cost.

[0004] Secondly, the repair and construction site of the bridge pier is generally at the bottom. If the root of the cofferdam is hit during construction, once the cofferdam collapses, it will not only fail to protect the bridge pier, but may also cause damage to the overall structure of the bridge, further exacerbating safety risks.

[0005] In addition, even if a cofferdam is set up on the bridge pier, the outer side of the bottom of the pier is still exposed to the outside and is corroded by humid gas for a long time. This erosion will cause the concrete on the surface of the pier to gradually peel off and the steel bars to rust.

[0006] Therefore, it is very necessary to invent a bridge pier protection structure for transforming the original cofferdam during bridge pier maintenance. Utility Model Content

[0007] The utility model aims to provide a bridge pier protection structure for transforming the original cofferdam during bridge pier maintenance, so as to solve the problems mentioned in the background technology.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model is a pier protection structure for modifying the original cofferdam during pier maintenance, comprising a base plate, a cofferdam, a support frame, a sleeve and a pier, wherein the upper side of the base plate is respectively fixed with the cofferdam and the pier, wherein the outer side of the pier is wrapped with the sleeve; the outer side of the sleeve is hingedly rotated to install a plurality of the support frames; the other end of the support frame is arranged in close contact with the inner wall of the cofferdam; the cofferdam comprises a crash barrier, a slider, a traction rope and a column, wherein the crash barrier is fixed on the base plate, and a plurality of the columns are fixed on the upper end of the crash barrier; a groove is provided on the inner wall of the lower end of the crash barrier, wherein a plurality of the sliders are slidably installed inside the groove through a slideway; the outer side of the slider is fixed with a traction rope, wherein the other end of the traction rope is fixed to the corresponding column.

[0010] Furthermore, the support frame includes a fixed column, a stud, an anti-bending tube, an extension column and a push plate, the fixed column is rotatably connected to the outer side surface of the sleeve by being hinged, and the other end of the fixed column is fixed with the stud and the anti-bending tube by welding, wherein the stud is arranged inside the anti-bending tube; the stud is arranged inside the extension column by threaded engagement, wherein the anti-bending tube is slidably arranged on the outer side surface of the extension column; the other end of the extension column is rotatably installed with a push plate, wherein the other side of the push plate is arranged to fit the inner wall of the cofferdam. Such an arrangement can enhance the structural strength of the cofferdam.

[0011] Furthermore, the sleeve includes a lower limit ring, a wrapping plate, an upper limit ring, a connecting column and a hexagonal column, wherein the lower limit ring and the upper limit ring are both fixed on the outer side surface of the pier, wherein the lower limit ring is arranged on the lower side of the upper limit ring; a plurality of the wrapping plates are slidably arranged inside the upper side surface of the upper limit ring, wherein the upper ends of the wrapping plates are slidably arranged inside the upper limit ring; the inner walls of the wrapping plates are fitted with the outer side surface of the pier, and the outer sides of the wrapping plates are hingedly rotatably mounted with fixed columns; a connecting column is slidably passed through the interior of the upper limit ring, wherein the lower end of the connecting column is fixed to the lower limit ring by threaded engagement; a hexagonal column is fixed to the upper end of the connecting column by welding, wherein the lower side surface of the hexagonal column is fitted with the upper side surface of the upper limit ring. Such an arrangement can reduce the damage of humid gas to the pier and provide space for the maintenance of the pier.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model opens a groove on the inner wall at the lower end of the anti-collision wall, which can increase the distance between the anti-collision wall and the bridge pier, and the slider can support the groove on the inner wall at the lower end of the anti-collision wall to prevent the anti-collision wall from collapsing. When the bridge pier is damaged, the position of the slider inside the groove on the inner wall at the lower end of the anti-collision wall can be changed by pulling the traction rope to keep it away from the damaged position of the bridge pier. At this time, the staff can insert the maintenance tool into the groove on the inner wall at the lower end of the anti-collision wall to maintain the bridge pier. After the maintenance is completed, the slider is reset by the traction rope. Finally, the adequacy of the construction space is guaranteed by modifying the original cofferdam without dismantling the original cofferdam, so that the maintenance construction can be completed under safe and efficient conditions.

[0014] 2. The setting of the support frame of the utility model can adjust the length of the support frame by rotating the extension column when it is in use, so that the push plate on the support frame is against the inner wall of the cofferdam, thereby strengthening the structural strength of the cofferdam. At the same time, the anti-bending pipe can prevent the studs outside the extension column from bending.

[0015] 3. With the setting of the sleeve of the utility model, when it is in use, the wrapping plate can reduce the damage of humid gas to the bridge pier. When the bridge pier is damaged and needs to be repaired, first rotate the hexagonal column to disengage the connecting column from the lower limit ring, and then disengage the upper limit ring from the wrapping plate. At this time, the wrapping plate and the support frame can be taken out between the bridge pier and the cofferdam, thereby providing space for the maintenance of the bridge pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the cofferdam of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the support frame of the utility model.

[0020] Figure 4 It is an exploded view of the sleeve of the utility model.

[0021] In the figure:

[0022] 1-bottom plate, 2-cofferdam, 21-anti-collision wall, 22-slider, 23-traction rope, 24-column, 3-support frame, 31-fixed column, 32-stud, 33-anti-bending pipe, 34-extension column, 35-push plate, 4-sleeve, 41-lower limit ring, 42-wrapping plate, 43-upper limit ring, 44-connecting column, 45-hexagonal prism, 5-bridge pier. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "all around" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0025] See also Figure 1 As shown, the utility model is a pier protection structure for modifying the original cofferdam during pier maintenance, comprising a base plate 1, a cofferdam 2, a support frame 3, a sleeve 4 and a pier 5, wherein the cofferdam 2 and the pier 5 are fixed to the upper side of the base plate 1, wherein the outer side of the pier 5 is wrapped with the sleeve 4; a plurality of support frames 3 are installed on the outer side of the sleeve 4 by hinged rotation; the other end of the support frame 3 is arranged in contact with the inner wall of the cofferdam 2.

[0026] like Figure 2As shown, the cofferdam 2 includes a crash barrier 21, a slider 22, a traction rope 23 and a column 24. The crash barrier 21 is fixed on the base plate 1, and a plurality of columns 24 are fixed on the upper end of the crash barrier 21; a groove is provided on the inner wall at the lower end of the crash barrier 21, and the height of the groove is 60 cm and the depth is 30 cm, wherein a plurality of sliders 22 are slidably installed in the groove through a slideway; a traction rope 23 is fixed on the outer side of the slider 22, wherein the other end of the traction rope 23 is fixed on the corresponding column 24. With such a configuration, the groove provided on the inner wall at the lower end of the crash barrier 21 can The distance between the crash barrier 21 and the bridge pier 5 is increased, and the slider 22 can support the groove opened on the inner wall at the lower end of the crash barrier 21 to prevent the crash barrier 21 from collapsing. When the bridge pier 5 is damaged, the position of the slider 22 inside the groove opened on the inner wall at the lower end of the crash barrier 21 can be changed by pulling the traction rope 23 to keep it away from the damaged position of the bridge pier 5. At this time, the staff can insert the maintenance tool into the groove opened on the inner wall at the lower end of the crash barrier 21 to maintain the bridge pier 5. After the maintenance is completed, the slider 22 is reset by the traction rope 23.

[0027] like Figure 3 The support frame 3 includes a fixed column 31, a stud 32, an anti-bending tube 33, an extension column 34 and a push plate 35. The fixed column 31 is rotatably connected to the outer side surface of the sleeve 4 by being hinged, and the other end of the fixed column 31 is fixed with the stud 32 and the anti-bending tube 33 by welding, wherein the stud 32 is arranged inside the anti-bending tube 33; the stud 32 is arranged inside the extension column 34 by threaded engagement, wherein the anti-bending tube 33 is slidably arranged on the outer side surface of the extension column 34; the other end of the extension column 34 is hingedly rotatably installed with a push plate 35, wherein the other side surface of the push plate 35 is arranged to fit the inner wall of the cofferdam 2. When in use, the length of the support frame 3 can be adjusted by rotating the extension column 34, so that the push plate 35 on the support frame 3 is against the inner wall of the cofferdam 2, thereby strengthening the structural strength of the cofferdam 2. At the same time, the anti-bending tube 33 can prevent the stud 32 outside the extension column 34 from bending.

[0028] like Figure 4The sleeve 4 comprises a lower limit ring 41, a wrapping plate 42, an upper limit ring 43, a connecting column 44 and a hexagonal column 45. The lower limit ring 41 and the upper limit ring 43 are fixed on the outer side of the pier 5, wherein the lower limit ring 41 is arranged on the lower side of the upper limit ring 43; a plurality of wrapping plates 42 are slidably arranged inside the upper side of the upper limit ring 43, wherein the upper ends of the wrapping plates 42 are slidably arranged inside the upper limit ring 43; the inner walls of the wrapping plates 42 are fitted with the outer side of the pier 5, and the outer side surfaces of the wrapping plates 42 are hingedly rotatably mounted with fixed columns 31; the interior of the upper limit ring 43 is slidably penetrated by connecting columns 44, wherein the connecting columns The lower end of 44 is fixed to the lower limit ring 41 by threaded engagement; the upper end of the connecting column 44 is fixed with a hexagonal prism 45 by welding, wherein the lower side surface of the hexagonal prism 45 is fitted with the upper side surface of the upper limit ring 43. When in use, the wrapping plate 42 can reduce the damage of moist gas to the pier 5. When the pier 5 is damaged and needs to be repaired, first rotate the hexagonal prism 45 to disengage the connecting column 44 from the lower limit ring 41, and then disengage the upper limit ring 43 from the wrapping plate 42. At this time, the wrapping plate 42 and the support frame 3 can be taken out between the pier 5 and the cofferdam 2, thereby providing space for the maintenance of the pier 5.

[0029] See also Figure 1-4 As shown, the utility model is a pier protection structure for modifying the original cofferdam during pier maintenance, and its working principle is as follows: when in use, the cofferdam 2 can protect the pier 5 to prevent the external river water from damaging the pier 5, and the sleeve 4 can wrap around the pier 5, thereby reducing the erosion of the pier 5 by moist gas, and at the same time, the support frame 3 can support the cofferdam 2 to reduce the risk of the cofferdam 2 collapsing;

[0030] When the pier 5 is damaged and needs maintenance, the length of the support frame 3 is first shortened, and then the support frame 3 and the sleeve 4 are taken out. At this time, the staff can insert the maintenance tool into the groove opened on the inner wall of the lower end of the crash barrier 21 to maintain the pier 5.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pier protection structure for modifying an original cofferdam during pier maintenance, comprising a bottom plate (1), a cofferdam (2), a support frame (3), a sleeve (4) and a pier (5), characterized in that: The upper side of the base plate (1) is respectively fixed with a cofferdam (2) and a bridge pier (5), wherein the outer side of the bridge pier (5) is wrapped with a sleeve (4); the outer side of the sleeve (4) is rotatably mounted with a plurality of support frames (3); the other end of the support frame (3) is arranged in close contact with the inner wall of the cofferdam (2); the cofferdam (2) comprises a crash barrier (21), a slider (22), a traction rope (23) and a column (24); the crash barrier (21) is fixed on the base plate (1), and a plurality of columns (24) are fixed on the upper end of the crash barrier (21); a groove is provided on the inner wall of the lower end of the crash barrier (21), wherein a plurality of sliders (22) are slidably mounted inside the groove via a slideway; a traction rope (23) is fixed to the outer side of each slider (22), wherein the other end of the traction rope (23) is fixed to the corresponding column (24).

2. The pier protection structure for modifying the original cofferdam during pier maintenance as claimed in claim 1, characterized in that: The support frame (3) comprises a fixed column (31), a stud (32), an anti-bending pipe (33), an extension column (34) and a push plate (35); the fixed column (31) is rotatably connected to the outer side surface of the sleeve (4), and the other end of the fixed column (31) is fixed with the stud (32) and the anti-bending pipe (33), wherein the stud (32) is arranged inside the anti-bending pipe (33); the stud (32) is arranged inside the extension column (34) by threaded engagement, wherein the anti-bending pipe (33) is slidably arranged on the outer side surface of the extension column (34); the other end of the extension column (34) is rotatably mounted with the push plate (35), wherein the other side surface of the push plate (35) is arranged to fit the inner wall of the cofferdam (2).

3. The pier protection structure for modifying the original cofferdam during pier maintenance as claimed in claim 1, characterized in that: The sleeve (4) comprises a lower limit ring (41), a wrapping plate (42), an upper limit ring (43), a connecting column (44) and a hexagonal column (45); the lower limit ring (41) and the upper limit ring (43) are both fixed to the outer side surface of the pier (5), wherein the lower limit ring (41) is arranged on the lower side of the upper limit ring (43); a plurality of wrapping plates (42) are slidably arranged inside the upper side surface of the upper limit ring (43), wherein the upper ends of the wrapping plates (42) are all slidably arranged on the upper limit ring (43). The inner wall of the wrapping plate (42) is fitted with the outer side surface of the pier (5), and the outer side surface of the wrapping plate (42) is rotatably mounted with a fixing column (31); a connecting column (44) is slidably passed through the interior of the upper limit ring (43), wherein the lower end of the connecting column (44) is fixed to the lower limit ring (41) by threaded engagement; a hexagonal column (45) is fixed to the upper end of the connecting column (44), wherein the lower side surface of the hexagonal column (45) is fitted with the upper side surface of the upper limit ring (43).

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